Test switch with improved marking



FIG. 1 is a front and right side perspective view of a test switch with improved marking showing our new design;

FIG. 2 is a rear and right side perspective view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a left side elevational view thereof, the right side being a mirror image of the left side;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof. 

We claim the ornamental design for a test switch with improved marking, as shown and described. 